punctuator '[' and ']'.
JS ⟩ grammar ⟩ token ⟩ punctuator ⟩ bracket []
bracket notation [] - a[1].
a[1]
optional chaining (?., ?.[]) - obj ?. [prop].
obj ?. [prop]
array literal - [1,2,3].
[1,2,3]
Last updated 3 years ago